Sony FE 100-400mm f/4.5 GM OSS

The Sony FE 100-400mm f/4.5 GM is a super-tele zoom with best-in-class build and autofocus. It's expensive and heavy, and the optics are surprisingly average, but for wildlife and sports it's hard to beat. Shop around, US prices vary by over $1,500.

The AF is the headline here. Linear motors snap focus instantly and tracking active subjects feels effortless, which is exactly what you want when a bird decides to relocate mid-frame. Stabilization is strong, well above average, and helps a lot at 400mm handheld. Optically, it's a bit of a mixed bag in our rankings. The bokeh is solid but not spectacular, and the optical score lands in the middle of the pack, which is surprising for a G Master. The constant f/4.5 is nice, but it's not a fast lens by any stretch. At 1840g, it's also a chunky companion for a full day of shooting.

Stacked against the competition, this lens is a specialist. The Canon RF 24-105mm f/2.8 and Sigma Art 28-105mm f/2.8 are faster and more versatile for general work, but they can't touch the Sony's reach. The Nikon Z 70-200mm f/2.8 VR S is a better low-light option but gives up 200mm on the long end. The Viltrox and Tamron 35mm primes are completely different animals, fast and sharp but no zoom at all. If you need 400mm with this kind of AF and build, the Sony is basically in a class of its own.

Value is a mixed bag. In the US, prices swing wildly from $2,750 to $4,300 depending on where you look. That's a $1,550 spread, which is frankly ridiculous. Shop around. Best Buy has listings at the lower end of that range, so check there first. Outside the US, it gets painful. CAD 5,598 and GBP 3,940 are serious commitments. The lens earns its keep for working pros, but hobbyists need to ask themselves how often they'll actually shoot at 400mm.

Sony's FE 100-400mm f/4.5 GM is a serious piece of glass for people who shoot things that move, far away, or both. Wildlife, sports, airshows, you name it. The build quality is top of the charts, the autofocus is stupid fast, and the stabilization actually works like it should. It's not cheap and it's not light, but it delivers where it counts.

We pulled the numbers and this lens sits in the 99th percentile for build and 96th for AF. That's not marketing talk, that's our database talking. The constant f/4.5 aperture is a nice touch too, no losing light when you zoom out to 400mm.

Skip this if you shoot mostly in low light or indoors. The f/4.5 aperture is a real limitation for concerts, indoor sports, or evening events, and the optical performance won't bail you out. Also skip it if you're a casual shooter who just wants a long zoom for vacations. The weight and price are overkill for that. Look at Sony's 70-300mm or a third-party option instead.

This lens is for wildlife and sports shooters who need reach and speed above all else. If you're photographing birds, motorsports, or your kid's soccer game from the sidelines, the AF and stabilization will make you look like a better photographer than you are. It's overkill for casual shooters and the optical performance won't blow your mind, but the handling and reliability will.